Shootings would not get to zero but the use of tasers sure would go way up. Instead of using arguments and commands and bodily force they'd just whip out the taser. BTW tasers are just less than lethal, not non-lethal. A lot of people can't handle the jolt. But of course that's not what they are advertised as and that's not how cops use them.
It's not rare. Tasers fail about half the time from the videos I've seen. Here's another good example: https://www.youtube.com/watch?v=G2NmCMpoDzs
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